Fountain-pen nib.



D. CAMERON.

FOUNTAIN PEN NIB.

APPLICATION rILBn Nov.,19on` 940,509. Patented Nov. 16, 1909.

2 SHEETBNSHEET 1.

\1 a Hf @L D. CAMERON.

FOUNTAIN PEN NIB,

APPLIOATION FILED Nov` 2e, mou.

940,509. Patented N0v,16, 1909,

2 SHEETS-SHEET 2` neled feed-bar is arranged DUNCAN CAHEBUN. 0F EDINBURGH. SGOTLAITD.

FOUNTAIN-PEN NIB.

Specicetlon o! Letten Patent.

Patented Nov. 16, 1909.

Application med November 28, 180B. -Serlal Ho. 464,817.

siding at Edinburgh, Scotland, Great Britain, have invented certain new und useful Improvements in Fountain-Pen Nibo, of which the following is u specification.

This invention relates to nibs for use in connection with fountain pens.

lhe usual methods of. feediilgor su plying the ink from the reservoir to the -ni are either the under-feedI or the twin-feed. In the former case a snglegroaved or channlong the underside of the nib and lextends Vwell forward under the slit and pointl .but with this method of feeding the ink, it is not ipossible y to employ u flexibie nib owing to the ct tlmt the rising -or yield of thenib under the pressure of the hand in writin would cause the underside to more away 'om the feedbn-r, and thus the continuity of the ink-Bow would be temporarily broken. In the twinfeed method, top and bottom bars are emplo ed, the nib comin between them1 but owing to the top-bar in comparatively rigid2 it does not allow o the' nib readily yicldin to pressure und the onlyllexibility is that gderived from the end of the nib forward of the top feetl,'und which is obtained by the wide-slitting of the points or by reducing the thickness of the metal.

The object of the present invention is to obviate these disadvantages, und to i'ovide nu improved form of nib und ink-fee device which is cupnblc of boing made exceedingly tiexihle, equal in fact, to the flexibility of :my steel pen, und ut the saune time insuring n iei'fect und continuous lion' oi' ink to the ni i nmlcr ull conditions, notwithstanding the extent lo which the pen muy yield when writing. This olifccl. it. is pro osed to uttalin by employing :i exible top eed-bar which is nttuchcd nt its inner cnil to thel hotly of the nib, and forming lioliind the ordinary pierce hole or slit of Ihc nib, one or more independent piercings` or openings leading from the i-.lmnni'i or ink-luci in the bottoni feed-bur to thc underside of the top bnr, by which moons a nun-.h shorter under-bur von hc employed. 'lhns when the nib yields to pressure, not only is the underside less lilible to move uwuy from the short. feed-bnr owing to tho com nlriitively simili nngniur movemonl. mudo i the inner ond of the nib-bond Inn. even if t iis should hoppen, the ink cnn still flow through theleuxilary iercing or o ening to the top feed-barI iv ich latter t ns maintains the supply of ink to the pen. Figure 1 of the accompanying drawings represents `a pen nib inside elevation constructed in accordance with this invention, und shown as 4fitted to a fountain pen. `'This view shows the application of the invention to a nib having en Ordinar pierce hole et the inner end of the slit. ug. 2 is a longitudinal section through the nib nndV feed bnr. Fi 3 is a transverse section on line ai F.ig 2. `ig. 4 shows an undersideV plonof the nib removed from the en body. 5 is a top-side plan of sai nib. (iris a View of the nib with the feed bars removed therefrom. Fig. 6 is a plnn view of the top feed bnr. Fig. 6 is n longitudinal sectional feed bar. Fig. 7 is a longi- \-iew of the top tndinnl section showin the application of 1e oint of which is the invention to n nib,

rovid with the ordislit without being narypieree hole. 4 ig. 8 shows in plan said nib and the tlop feed. bar separated from one another. iig. 9 is a section of a modied form of nib. underside plan.

The same let-ters responding ports in euch the drawings.

Referring to Figs. 1 to 6, the nib a is rovided with a pierce hole l, und the point is slit ut a ns usual. To the rear of the inner end of said pierce hole n piercingor aperture c is formed, which is quite separate nud independent. of said hole b, and is situated toward the reni' of the head of the nib, so that the bottom .feed-bnr (l, whose inkdnct extends under sii-id aperture t', con be mudo considerably shorter than usual.

'The iop feed bor c consists of u long ilexible tongue which covers said piercing c, und extends forwardly to or neur the point of the nib, while the rcur end is suitably cured to the shank or body of the nib by any suitable means, such :ls by u mir of ears e at the oiposite sides. whic 1 are posso-d through slits 11.*' in Suid shnnk und clenched over on the underside und so tlmt the frontend is left free und flexible whereby it cnn yield or lcx itself in unison with thc movinionts lnndc by the point of the nib when thc pen isili use. 'lhc top tongui` c muy bv further sccuird h n smul] longue o nt about thc middle o its len lh which is iussod through the pierce-hoc Ti in the nii und of reference indicate corof the figures of Fig. 10 shows same in.

Hifi

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clenched over, said ton e e' bein preferably formed out of the of sai tongue so as to leave the pierce ho e e. That portion of thc nib between the pierce hole b and the a erture c may be slightly sunken or receseci), as at a, so as to assist the flow of ink.

During ordinary wi'iting the ink is su lied to the underside of the nib direct om the bottom feed-bar d and also throug i the pierce hole b and auxiliary pierc' or aperture c, or aperture c alone, to the un erside of the top feed-bar e, from whence it is led along the slit of the nib to the int. Should now the nib be bent back from the under feed-bar due to the pressure of the hand, the direct dow to the underside of the nib and to the pierce hole b, will be tempo rarily arrested but the ink will still continue to flow through the aperture c to the top bar, which keeps up the supply to the ni In the form shown in F 7 and 8, the point of the nib is slit at ax without being rovided with the ordinary pierce hole.

he a rture c is formed to the rear of the end o the slit, and is quite independent of the latter. The top feed e is secured passing the tongue e throu h a small ho e formed at the end of the it, and clenchsame on the underside of the nib.

s represented in Fi 9 and 10, a special piercing f ma be provided for receiving the tongue stof t e top feed bar e, said piercing f coming between the pierce hole b and the a ure c.

Having fully described my invention, what I desire to claim and secure by Letters Patent is:-

1. In a fountain pen the combination with the barrel and lower feed bar, of a en nib provided with a forward opening an a rear opening and an auxiliary upper feed baihaving an intermediate tongue engaging the forward opening of the pen nib.

2. In a. fountain pen, in combination, a lower feed bar, an up r feed ber and a pen nib provided with a orward openin and a rear o ening sup orted between t e feed bars, t e upper eed bar having locking means integral therewith intermediate its length for locking enga ement with the forward opening in said ni 3. In a fountain pen, a nib havin a foi-- ward elongated substantially triangular shaped opening and a rear independent feed opening and an up r feed bar having means to pass throu h t e said triangular sha ed opening to loc said nib and upper feed gai'.

4. In a fountain pen, the combination with a lower feed bar and a nib having a forward opening and a rear opening, of an auxiliary feed bar in association therewith and pro vided with locking means engaging the for ward opening in said nib.

5. In a fountain pen, in combination, a lower feed bar an upper feed bar and an interposed nib having a slit terminating in an opening and having also an independent feed opening in its rear portion, the upper feed bar havin an intermediate tongue which is engaged rough the first openni 6. In a fountain pen, in combination a m provided with two feed openings and with a slit extending from the forward o ening, a lower feed bar extending under bo open' ingis end an upper feed bar overlying the nib an receiving ink from the rear opening.

7. In a fountain pen, in combination, a .lower feed bar, an upper feed bar, and an interposed nib having a feed opening establishing communication between the feed bars and having a depression in advance of the feed open' 8. In a ountain pen, in combination, a nib,n. feed bar overlyint the same, and means for supplying ink to e space between the feed bar and the nib, the latter having a depression to facilitate the flow of the ink.

9. [n a fountain pen in combination, a nib provided with two feed openings, with a slit extending from the forward opening and with a e ression between the openings, n lower f liar extend' under both openings and an upper fee bar overlying the ni extending over the rear opening and the depression, and receiving ink from the reniopening.

In testimony wliercof I have hereunto sci my hand in presence of two subscribing witnesees.

DUNCAN CAMERON. Witnesses:

James Gimme, MAnooLM BLAIR.

liliI 

